Safety-razor



A. C. ROEBUCK.

SAFETY RAZOR. APPLICATION FILED Nov. II, Isls.

Patented Apr. 13, 1920.

.ALVAI-I C. ROEBUCK, 0F EVANSTON, ILLINOIS.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Apr. 13, 1.920.

Application filed November 11, 1918. Serial No. 261,981.

To all whom t may concern:

Be it known that I, ALVAH C. ROEBUGK, a citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Safety-Razors, of which the following is a speciication.

vThis invention relates to safety razors, and one of the principal objects of the invention is to produce a razor of this class in which blades of various kinds and sizes may be accommodated by the simple adjustment of a rotatable member.

Another object of the invention is to provide a simple, durable and inexpensive device of this class which is effective and etlicient in operation.

Other objects will appear hereinafter.

The invention consists in the novel construction, Combination and arrangement of the several parts.

In the accompanying drawing- Figure 1 is a side elevation with parts broken away of a razor embodying this invention.

Fig. 2 is a top view of the base member and blade adapter.

Fig. 3 is a sectional View taken on line 3 3 of Fig. 2.

Fig. 4 is a section taken on line L -4 of Fig. 2; and

Fig. 5 is a detail sectional view.

It is common practice for each different safety razor to use a blade which is designed to fit only its own holder so that there are several well-known different safety razors of which the blades can be used only with their own specific holders. This has resulted in a great inconvenience for the safety razor owners for the reason that if the blades for the particular razor cannot be obtained, the holder itself is useless as generally no other blades will fit it. Of course there are some safety razors which use blades of the same size so that the blade of one razor will fit the holder of the other. The present invention, however, is designed and intended to provide a simple and effective means for accommodating blades not only of different width, but also of dierent length 'sothat any of the dierent sizes of blades for which the razor is adapted can be used with it and it is not limited in its use to a blade of a single size.

In the present invention there is a holder l which has a handle or grip 2 with an integral toothed guard 3. A base t is pivoted to the holder l by means of upstanding lugs 5 at the ends thereof through which a bearing pin 6 extends into an opening 7 of the holder. This bearing pin G fits tightly in the central portion of the hole 7, but the outer ends of the hole are widened, as indicated by the numeral S in Fig. 5, at right angles to the base member when in the position shown by Fig. 1 so that the base member can be sprung with respect to the holder.

Extending at the rear of the base member i are ears 9 in which an adapter 10 is rotatably mounted, the ears being formed with inwardly extending offsets 11. The axis of the adapter 10 is substantially in line with the upper face of the base member 4lupon which the various blades, as 12, are placed. rlhe upper face of the base member is formed with a countersunh portion 13 at about the center of its rear edge in which a holding spring la is seated and attached to the base many suitable manner. The remainder of the rear edge of the base member is preferably formed with an offset shoulder 15 below the face of the base member itself, except near the ends of where there are recesses 16.

The adapter 10 is preferably formed at the ends with enlarged portions 17 and in the center with an enlarged portion 18, the intermediate portions being reduced for decreasing the weight of the adapter. Each of the end portions 17 is formed with a semi-circular projection 19 which is of predetermined width and thickness so that it will project a predetermined distance from the axis of the adapter and so that the inner edge thereof will be a certain distance from the inside of the lugs 5. The adapter is also formed with longitudinally extending grooves 2O and 21, the former of which terminates substantially at the axis of the adapter, and the latter of which terminates at a distance therefrom so that when the adapter is rotated in proper position a blade of greater width can be held by the holder, as shown in Fig. 3. It will be observed, therefore, that the adapter provides four different baclrstops for the blades when the adapter is set in different positions. The central enlarged portion 18 is therefore provided with grooves 22 and 23 which are adapted to be engaged by a tongue 24 of the spring 14 which also engages the grooves 20 and 2l for holding the adapter in any one of four different positions.

At one or both sides of the base member 4 a pointer 25 is formed integral therewith, as shonn more clearly in Fig. l, and the adjacent extremity of the adapter is provided With distinguishing marks A, 1 3,

D, or the like, for indicating the posiy/tions in which it must be set in order to accommodate a certain blade.

In operation it will be observed that the adjustment of the adapter l() by rotation will provide a number of different stops against Which the rear edges of razor blades may be set. Blades of different length may also be accommodated by means of projections, such as 19, on the adapter so that the blade will fit between them or betiveen the lugs 5 or 9 of the base member itself. It is also found that some of the razor blades are provided 'with' backings somewhat thicker than the blade itself and for that reason the surface of the base member Llupon which the blades rest has been formed With the offset shoulder 15 so that the blades will lie flat on the face. Thus it will be seen that blades of diflei'ei'itwidths, different lengths, and even those with enlarged backings` can be accommodated by this single device which makes it adaptable for use with a large number` of different blades so that if any one of them is obtainable they can be used with this holder and the owner vrill not be dependent upon the possibility of obtaining a single kind of a blade which is intended for a single type of holder.

To insert a blade, the base member is of course rotated relatively to the holder l and the adapt-er is adjusted to correspond with the blade to be used. To get the best results in shaving it is necessary that the distance between the edge of the bade and the bearing surface of the guard be maintained in certain relationship, the distance a being greater than the distance Z), which determines the angle of the cutting edge of the blade to the face of the user, the distances a and being` determined by the adjustment of the rear edges of the blade. By having the hole 7 with an enlargement 8 at right angles to the plane or blade surface of the base ft, the movement of the base with respect to the holder is confined to the proper direction. and the various blades are held firmly but yielding-ly in proper position as related to the guard teeth between the base and the bearing points of the holder which press the blades firmly against the base member, the resiliency accommodating blades of different thickness. It will be observedv therefore that this holder is not only adapted to be used with blades of different lengths and Widths, but also of different thicknesses.

While the adapter is shown in combination with a holder as shown by Patent No. 1,250,775 of Fred R. Belt, it is understood that it may be used With other forms of holders as may be adaptable to its use.

I claim l. In a safety razor, a blade holder, and a rotatable adapter having its axis of rot-ation substantially in thev plane of the blade, said adapter having rigid means for engaging the rear edges of blades for accommodating blades of different Widths.

2. A safety razor comprising dierent rigid means at the ends for engaging the ends of blades of different lengths to prevent their endivise movement.

3. A safety razor comprising rigid means for engaging the rear edges and ends of blades of different Widths and lengths to bring their cutting edges to a common place and to prevent endivise movement of the blades.

4T. A safety razor for blades of different sizes, comprising a base upon Which the blades rest with a recess at a distance from the edge thereof to receivel a thicker backing plate on a blade, and rigid means to engage the rear edges of blades of different Widths with and Without a4 backing.

5. In a safety razor, means for holding blades of different thicknesses, and a rotatable adapter having its axis of rotation substantially in the plane of the blade and adjustable by rotation of said adapter to accommodate blades of different sizes.

G. In a safety razor, a holder comprising a handle, a base pivoted thereto, and a rigid adapter rotatable in the base for accommodating blades of different rectangular dimensions.

7. In a. safety razor, a base member, a pivoting pin attached at its ends only to the base member, and a. holder having a perforation through which the pin extends, the intermediate portion of the pin lit-ting tightly in the perforation and the ends of the perforation being ovally enlarged from the tight fitting portion permitting the base member to give in one direction only with respect to the holder.

8. In a safety razor, a holder, a base member, and a bearing pin for mounting the base member in the holder, the holder being formed With a perforation the ends of which are ovally graduated and enlarged at substantially right angles to the base member in one position thereof so that the base member will spring in that direction with respect' to the holder in clamping the blade between it and the holder.

9. In a safety razor, means for clamping a razor blade comprising a holder and a base member pivoted thereto, in combination with an adapter rotatable in the basemember and having different projections for engaging the edges of blades of different sizes.

10. In a safety razor, a holder, a base pivoted thereto, an adapter for blades of various sizes rotatable in the holder, and

vmeans for holding the adapter in different adjusted positions.

11. In a safety razor, a handle member, a base member pivoted thereto, a blade adapter rotatably mounted in the base at the rear of the cutting edge of a blade positioned therein, and means for yieldingly holding the adapter in any one of several positions.

12. In a safety razor, a holder, a base member pivoted thereto and having rearward projections, a blade adapter pivoted in the projections, and a spring attached to the base and having a tongue which yieldingly engages the adapter.

13. In a safety razor, means for gripping the opposite sides of a blade, and an adapter for accommodating blades of various sizes including a rotatable member with various projections which are movable to engage the edges of blades of different sizes.

14. In a safety razor, a base member, a holder to which it is pivoted, the base member having rearward projections, an adapter rotatably mounted in the projections and having portions thereof with means for engaging the back and ends of blades of dien ent sizes, and means for holding the adapter in any one of several positions.

15. In a safety razor, a holder, a base member pivoted thereto, and an adapter rotatable in the base member comprising projections at the ends thereof for engaging the backs and ends of blades of various widths and lengths at diEerent distances from the aXis of the adapter thereby accommodating blades of various sizes.

16. In a safety razor, an adapter for blades of various sizes comprising a cylinder with enlarged ends and longitudinal grooves for engaging the rear edge or back of blades of different widths, and means for clamping the blades in engagement with the adapter.

17. In a safety razor, a holder member and a base member for gripping blades of dierent thicknesses, an adapter pivoted in one of the members having grooves and projections for engaging the backs and ends of blades of various sizes and having notches in addition to the grooves, and a spring ating at the edge of one of them, and a blade* adapter pivoted in the projections and rotatable to any one of a number of different indicated positions to which the pointer refers to designate the position for which the adapter is set.

19. In a safety razor, a holder member and a base member for gripping blades of different thicknesses therebetween, an adapter pivoted in one of the members having grooves and projections for engaging the back and ends of blades of various sizes and having notches in addition to the grooves, and a spring attached to one of said members having a tongue to engage the grooves and notches for holding the adapter in any one of several positions.

20. A safety razor comprising a holder and a rotatable adapter having means for engaging the ends of blades of various len hs.

21. In a safety razor, a holder, and a rotatable adapter having means for engaging the rear edges and ends of blades of dier ent widths and lengths depending upon the rotated position of the adapter.

22. A safety razor comprising a blade holder, and an adapter for said holder having rigid stops thereon for locating blades of different lengths and fwidths in said holder, said adapter being adjustable by a single movement to accommodate said holder to blades differing both in length and width.

23. A safety razor comprising a blade holder, a rotatable adapter having its axis of rotatation substantially in the plane of the blade held by said holder and having rigid stops thereon for engaging blades of dierent widths to bring the cutting edges thereof into proper cutting position, and a plurality of sets of rigid stops for engaging the ends of blades of different lengths.

In testimony whereof I have signed my name to this specification on this 7th day of November, A. D. 1918.

ALVAH C. ROEBUCK. 

